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What amount of BOD indicates high water pollution?

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in Biology – Class 12 by (271k points)
What amount of BOD indicates high water pollution?

(a) 4000mg/liter

(b) 400mg/liter

(c) 40mg/liter

(d) 4mg/liter

The question was posed to me during an interview for a job.

My query is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

1 Answer

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Right option is (a) 4000mg/liter

For explanation I would say: BOD is the dissolved oxygen is utilized by microbes in decomposing the organic wastes of water. When the amount of BOD is more than equal to 4000mg/liter, it indicates high water pollution.

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